On Wed, 12 Apr 2017 09:49:38 +0900, manty kuma said: > The source code that is doing this is here - > http://androidxref.com/kernel_3.10/xref/drivers/usb/core/hub.c#4693 4693 /* 4694 * EM interference sometimes causes badly 4695 * shielded USB devices to be shutdown by 4696 * the hub, this hack enables them again. 4697 * Works at least with mouse driver. 4698 */ Seems self-explanatory enough. Almost certainly not a software issue. > But I did not get much info from here. Someone who is proficient with USB > protocol might be able to asnwer this very quickly. Most likely, you have a crappy/broken shield/ground connection somewhere in the USB path. Your device doesn't have a clean electrical connection from it to the hub, and when the hub detects too much electrical noise on the line, it dumps the device.
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